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		<title>three.js webgl - lights - point lights</title>
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		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - point lights WebGL demo.<br />
			Walt Disney head by <a href="http://web.archive.org/web/20120903131400/http://davidoreilly.com/post/18087489343/disneyhead" target="_blank" rel="noopener">David OReilly</a>
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import Stats from 'three/addons/libs/stats.module.js';

			import { OBJLoader } from 'three/addons/loaders/OBJLoader.js';

			let camera, scene, renderer,
				light1, light2, light3, light4,
				object, stats;

			const clock = new THREE.Clock();

			init();

			function init() {

				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.z = 100;

				scene = new THREE.Scene();

				//model

				const loader = new OBJLoader();
				loader.load( 'models/obj/walt/WaltHead.obj', function ( obj ) {

					object = obj;
					object.scale.multiplyScalar( 0.8 );
					object.position.y = - 30;
					scene.add( object );

				} );

				const sphere = new THREE.SphereGeometry( 0.5, 16, 8 );

				//lights

				light1 = new THREE.PointLight( 0xff0040, 400 );
				light1.add( new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0xff0040 } ) ) );
				scene.add( light1 );

				light2 = new THREE.PointLight( 0x0040ff, 400 );
				light2.add( new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0x0040ff } ) ) );
				scene.add( light2 );

				light3 = new THREE.PointLight( 0x80ff80, 400 );
				light3.add( new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0x80ff80 } ) ) );
				scene.add( light3 );

				light4 = new THREE.PointLight( 0xffaa00, 400 );
				light4.add( new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0xffaa00 } ) ) );
				scene.add( light4 );

				//renderer

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				document.body.appendChild( renderer.domElement );

				//stats

				stats = new Stats();
				document.body.appendChild( stats.dom );

				window.addEventListener( 'resize', onWindowResize );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function animate() {

				render();
				stats.update();

			}

			function render() {

				const time = Date.now() * 0.0005;
				const delta = clock.getDelta();

				if ( object ) object.rotation.y -= 0.5 * delta;

				light1.position.x = Math.sin( time * 0.7 ) * 30;
				light1.position.y = Math.cos( time * 0.5 ) * 40;
				light1.position.z = Math.cos( time * 0.3 ) * 30;

				light2.position.x = Math.cos( time * 0.3 ) * 30;
				light2.position.y = Math.sin( time * 0.5 ) * 40;
				light2.position.z = Math.sin( time * 0.7 ) * 30;

				light3.position.x = Math.sin( time * 0.7 ) * 30;
				light3.position.y = Math.cos( time * 0.3 ) * 40;
				light3.position.z = Math.sin( time * 0.5 ) * 30;

				light4.position.x = Math.sin( time * 0.3 ) * 30;
				light4.position.y = Math.cos( time * 0.7 ) * 40;
				light4.position.z = Math.sin( time * 0.5 ) * 30;

				renderer.render( scene, camera );

			}

		</script>
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